Guys, if you walk past your sink and you notice an off smell (okay, stench) coming from your sink, think about all the squirrels, rabbits and game birds you gutted in it over the winter, not to mention how many times you and your lady friends puked in it when the bathroom was just a little too far away. Some of it was bound to have got caught in the J trap.
Here's what you do:
Go out to your shop/garage/meth lab and get your shop vac. Remove the filter, place the hose over the drain, seal the other drain if you have a dual sink, then turn it on to suck up the offal/puke. This also works if your sink is stopped up because of fur clogging it up.
After that, dump about a cup of baking soda down the drain followed by a couple of cups of white vinegar to deodorize it.
It beats the shit out of taking the J trap off to clean it. Not only that but it saves on a re-puke.